A pale blue gas having a characteristic sharp smell restores the colour of blackened lead paintings.The gas isA. `O_(3)`B. `O_(2)`C. `SO_(2)`D. `CI_(2)`

A pale blue gas having a characteristic sharp smell restores the colou

1.	A pale blue gas having a characteristic sharp smell restores the colour of blackened lead paintings.The gas isA. `O_(3)`B. `O_(2)`C. `SO_(2)`D. `CI_(2)`
Answer» Correct Answer - 1 Black lead sulphide is oxidized to while lead sulphate `{:(O_(3)rarr O_(2) +O"]"xx4),(PbS+4O rarr PbSO_(4)),(bar(PbS+4O_(3) rarr PbSO_(4)+4O_(2))):}`

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A pale blue gas having a characteristic sharp smell restores the colour of blackened lead paintings.The gas isA. `O_(3)`B. `O_(2)`C. `SO_(2)`D. `CI_(2)`

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